Texas Instruments TPS54614EVM 1.8-V SWIFT, User Manual, Page: 19 / 33

Output Voltage Regulation
2-7 Setup and Test Results
2.6 Loop Characteristics
The loop gain and phase for a 5.0-V input and a 6.0-A load are shown in
Figure 2–9 and Figure 2–10. The loop crossover frequency is approximately
50 kHz, and the phase margin is approximately 46
°
.
Figure 2–9. Measured Loop Gain
–20
–10
0
10
20
30
40
50
10 100 1000 10000 100000
f – Frequency – Hz
Loop Gain
–
dB
Figure 2–10. Measured Loop Phase
f – Frequency – Hz
Loop Phase
–
Degrees
0
45
90
135
180
10 100 1000 10000 100000